Tool mounting



Jun@ Mr, 1932.

E. G. GARTEN TOOL MOUNTING Filed Aug. 16, 1928 N Q @E the support of apercussive motor 1. I The mo Patented June 14, 1932 UNITED STATES PATENTOFFICE ELMER (.Tr. GARTIN, 0F CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TOSULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS TOOL MOUNTINGApplication filed August 16, 1928.

My invention relates to tool mountings and more particularly toadjustable mountings for pneumatic tools adapted for rock drilln objectof my invention is to provide an improved tool mounting. Another objectof my invention is to provide an improved mounting for a tool ofthe rockdrill type. A further object of my invention is to provide an improvedmounting for a rock drill which may be readily adjusted to accommodatedrills of different size. A still further object of the invention is theprovision of improved mounting for rock drilling devices adapted toaccomodate such devices of different sizes and to feed them toward andfrom the work. Yet another object of the invention is to provide animproved mounting in which parts extending above the top of the toolwhen the same is clamped in position may be avoided. A still furtherobject is the provision of a tool mounting permitting the bringing ofthe tool axis into proper parallelism with' the feeding mechanism.VOther objects and advantages of the invention will hereinafter morefully appear.

In the accompanying drawing I have shown for purposes of illustrationoneembodiment which my invention may assume in practice.

vIn this drawing,-

Fig. 1 is a view partially in side'elevation and partially inlongitudinal vertical section throughA the illustrative embodiment 'ofmy improved tool mounting, the view showing a tool mounted in position.f

l Fig. 2 is a transverse section on the line 2-2 of Fig. 1.

Fig. 3 is a plan view of the improvedV mounting without a tool mountedthereon.

To demonstrate its mode of use, I. have shown the illustrativeembodiment of my improved tool mounting, in Fig. 1, employed in tor 1has a handle 2, a cylinder 3, and a chuck housing 4.

t A trunnion 5 supports a shell 6 which is provided with the usualguides 7 lin which gibs 8 upona cradle element n9 are slidablysupported. i The cradle 9 carries'a feed nut Serial No. 299,915.

10 with which a feed screw 11, rotated by a feed handle 12, cooperatesto move the cradle toward and from the work.

The cradle 9 carries at its rear end a clamping mechanism for holdingthe handle of the drill 1. This clamping mechanism, generally designated14, comprises a seat member 15 having a recess 16 to receive and supportthe handle and a clamp element 17 overlies the handle and is held inplace by a nut 18 and stud 19. Forwardly of the clamp 14 the cradle 9 isprovided with guide gibs 21 arranged parallel to the gibs 8 butextending toward each other. Upon these gibs is mounted a slidingcarriage 22 having grooves 23 by means of which the carriage ispositioned for sliding movement along the gibs 21. Suitable means isprovided for veffecting an interlocking connection between the carriage22 and the drill 1. Herein, upstanding arms 24 upon the carriage carryscrews 25 which are adapted to engage threadedopenings in the chuckhousing 4 of the drilling tool 1.

When the handle 2 of the tool 1 is clamped in the clamping device 14andthe screws 25 are threadedly engaged in holes in the chuckV evidentthat I have provided a simple, readily adjustable, universal toolmounting for use in connection with ordinary pneumatic tools of the handtype, amounting in which different sizes of tools may be supported andin each case rigidly held in position. It will further be noted that theclamping device is of such a character that no partv thereof extendsabove the top. of the tool which it supports and that thereby a verycompact arrangement is provided. It will likewise be observed that thescrews 25 permit lateral adjustment ofA the'tool supported between themso that the axis of the chuck may be brought into the 'same plane withthe axis of the feed screw.

VWhile 1 have in this application specifically described one form whichmy invention may assume in practice, it will be understood that thisform of the same is shown for purposes of illustration and that theinvention may be modified and embodied in various other forms withoutdeparting from its spirit or the scope of the appended claims.

lVhat I claim as new and desire to secure by Letters Patent is:

` l. A tool mounting comprising a cradle, a clamping device for clampinga tool rigidly to said cradle at one end, a second tool holding meansadjustably mounted on said cradle, and means for securing the toolrigidly to said second tool holding means and including a pair of setscrews engaging the opposite sides of the tool.

2. A mounting for rock drills comprising a cradle, a clamping device onthe cradle adapted to cooperate with a part of a rock drill to clamp thesame te said cradle adj acent one end, a second tool holding meanscarried by the cradle presenting a pair of projecting portions adaptedto receive another part of the rock drill between them, and meanscarried by vsaid projecting portions and including independentlyadjustable holding elements each interengaging with said second part ofthe rocl drill for holding the same.

3. A mounting for rock drills comprising a cradle, a clamping device onthe cradle adapt-ed to cooperate with a part of a rock drill to clampthe same to said cradle adj acent one end, a member carried by thecradle presenting a pair of upstanding portions having free open endsand adapted to receive a second part of the roclr drill between them,and means carried by said member and including independently adjustableholding elements each interengaging with said second part of the rockdrill below said free ends 'to hold the drill.

4. A mounting for rock drills comprising a cradle, a. clamping device onthe cradle adapted to cooperate with a part of a roclr drill to clampthe same to said cradle adjacent one end, a member carried by the cradlepresenting a pair of upstanding portions having free open ends andadapted to receive a second part of the rock drill between them, andmeans carried by said member and including independently adjustableholding elements each interengaging with said second part of the rockdrill below said free ends to hold the drill in position, said memberbeing movable longitudinally relative to said cradle.

5. A mounting for rock drills comprising a cradle7 a clamping device onthe cradle adapted to cooperate with a part of a rock drill to clamp thesame adjacent one end, a member carried by the cradle adjacent the otherend, said member presenting a pair of parallel upstanding portionsadapted to receive another part of the rock drill between them, and apair of screws carried by said upstanding portions and extendinginwardly to interengage with said second part of the rock drill.

6. ln a rock drilling mechanism, a guide saell, a cradle slidably guidedon said shell, a rock d rill, and means for positioning and holding therock drill on said cradle including an adjustable device engaging arearportion of the drill for rigidly securing the rear end of the drillin position on said cradle, and an adjustable device engaging a forwardportion of the drill for rigidly securing the forward end of the drillagainst vertical displacement on the cradle and including a pair of setscrews engaging the opposite sides of the drill.

7. In a rock drilling mechanism, a guide shell, a cradle slidably guidedon said shell, a rock drill, and means for positioning and holding therock drill on said cradle including an adjustable device engaging a rearportion of the drill for rigidly securing the rear end of the drill inposition on said cradle, and an adjustable device engaging a forwardportion of the drill for rigidly securing the forward end of the drillagainst vertical displacement on the cradle and including a pair of setscrews engaging the opposite sides of the drill, said latter devicebeing adjustable in a longitudinal direction relative to the cradle tovary the distance between said devices to enable drills of differentlengths to be secured in position on said cradle.

8. In a rock drilling mechanism, a guide shell, a cradle slidably guidedon said shell, a rock drill, and means for positioning and holding therock drill on said cradle including an adjustable device engaging a rearportion of the drill for rigidly securing the rea-r end of the drill inposition on said cradle, and an adjustable device engaging a forwardportion of the drill for rigidly securing the forward end of the drillagainst vertical displacement on the cradle, and including elementsadjustable in a direction transversely of the cradle and engaging thesides of a forward portion of the drill for laterally positioning thedrill on said cradle and for rigidly holding the drill in such position.

9. In a rock drilling mechanism, a guide shell, a cradle slidably guidedon said shell, a rock drill, and means for positioning and holding theroclr drill on said cradle including an adjustable device engaging arear portion of the drill for .rigidly securing the rear end of thedrill in position on said cradle, and an adjustable device engaging aforward portion of the drill for rigidly securing the-forward end of thedrill against vertical displacement on the Vcradle including a memberslidably guided on said cradle at the forward end thereof and forming asupport for the front end of the drill, and devices carried by saidslidable member adjustablek in a direction transversely of the cradleand interengaging the sides of a bottom portion of the drill for rigidlysecuring said drill to said slidable memberi l0. In a rock drillingmechanism, a guide shell, a cradle slidably guided on said shell, a rockdrill, and means for positioning and holding the rock drill on saidcradle including an adjustable device engaging a rear portion of thedrill for rigidly securing the rear end of the drill in position on saidcradle, and an adjustable device engaging a forward portion of the drillfor rigidly securing the forward end of the drill against verticaldisplacement on the cradle including a member slidably guided on saidcradle and forming a support for the front end of the drill, said memberhaving upstanding side portions projecting along the sides of the bottomportion of the drill and set screws carried by said side portions andadjustable in a direction transversely of the cradle for interengaging apart of the drill to rigidly secure the drill to said slidable member.

In testimony whereof I aiiX my signature.

ELMER G. GARTIN.

